Technical Information Flow Measuring System …

1 Technical Information Electromagnetic TI 043D/06/en No. 50093117 Flow Measuring System promag 30 ( model '99). Flexible System Measure Precisely Wide choice of materials for process Measuring error: or connections and Measuring tube 1000:1 operable flow range linings, compatible to the fluid Excellent repeatability Transmitter housing and display can be rotated to fit the orientation Install Anywhere Robust, shock-resistant aluminium Operational Security housing, resistant to acids and ISO 9001 manufacturer caustics High electromagnetic compatibility IP 67 protection for compact and (EMC) remote versions (optional IP 68 sensor).

2 High operating integrity through Wide size range DN (1 "). self-monitoring Flanged version with ISO meter lengths Data protection with EEPROM Modular, hygienic sensor for food and on power failure (without batteries) pharmaceutical applications Auxiliary input for Positive Zero Return Ex versions for use in Ex Zones 1 and 2. (PZR) and totalizer reset Empty Pipe Detection (EPD). Easy to Operate Local display: all important variables easily read off E+H operating matrix: instrument functions easily configurable Endress + Hauser Nothing beats know-how Home Contents Print Exit Measuring System Fields of Application With the promag 30 ( model '99) flow- Ex Versions promag 30 ( model '99) is available meter most liquids can be measured as a remote version with the following provided they have a minimum conduc- Ex approvals: tivity of 5 S/cm, Sensor in Ex Zone 1.

3 Acids, alkalis, pastes, pulps, Transmitter in Ex Zone 2. drinking water, waste water, sewage sludge, milk, beer, wine, mineral water, yoghurt, molasses, etc. A minimum conductivity of 20 S/cm is required for Measuring demineralised water. Sensor Transmitter promag A. DN promag 30 ( model '99). Compact version promag H. DN Remote version (with wall mounting). promag F. DN promag F. DN ti043y02. Measuring System The promag 31 F / 31 H. The Measuring System consists of: Measuring System promag 30 ( model '99) transmitter The promag 30 is also available under promag A, H or F sensor the following designations and approv- als: The promag 30 Measuring System is mechanically and electronically promag 31 F.

4 Designed for maximum flexibility with PTB approval for custody transfer the transmitters and sensors being with cold water and wastewater (either combined in any variation. The wide for approval or approved for custody range of materials and process transfer). connections (fittings; flanges DIN, ANSI, Heat measurement approval, JIS; Tri-Clamp, etc.) ensure that the Swiss certification to OIML R72/R75. Measuring point can adjust to both plant and process conditions. promag 31 H. PTB approval to DIN 19217 (OIML 117).

5 For custody transfer with beer, original wort, milk. 2. Function Measuring Principle According to Faraday's Law of Magnetic Function of the promag 30 ( model '99). The promag transmitter converts the Induction, a voltage is induced into a measured values coming from the conductor which moves in a magnetic sensor into standardised output signals. field. With the electromagnetic measur- The following outputs are available for ing principle, the flowing fluid is the these signals: moving conductor. The induced voltage Current output is proportionally related to the flow (full scale value freely selectable).

6 Velocity and is fed to the Measuring Pulse output amplifier by a pair of electrodes. Using (pulse value freely selectable). the pipe cross-sectional area, the flow Status output: volume is calculated. Indication of System or process errors The DC magnetic field is generated by Indication of flow direction a switched direct current of alternating Auxiliary input: polarity. Together with the patented Positive zero return Integrated Autozero Circuit , this guar- Totalizer reset antees a stable zero point, and makes the measurement fluid-independent and promag 30 also has the following insensitive to entrained solid particles.

7 Features: Every meter is factory calibrated with Empty Pipe Detection (EPD) detects the most modern calibration rigs, trace- and indicates partially filled or empty able to national standards. Measuring tubes. The special electrode cleaning cir- cuitry (EEC) ensures accurate flow measurement even with conductive build-up in the Measuring tube ( magnetite). Ue = B L v Q = v A. Ue = induced voltage B = magnetic induction (magnetic field). L = distance between electrodes v = flow velocity Q = volume flow A = pipe cross-section ti043y01.

8 3. Operation Display and Operation The promag 30 Measuring System is Three operating keys are used for equipped with a large local display. selecting and setting all functions of the This ensures that all important variables instrument. can be read off and controlled directly The E+H operating matrix allows quick at the Measuring point: and easy access to all individual Flow rate and/or totalized flow functions. Technical units Process conditions: falling below creep limit signal outputs exceeded Display of System errors LC display 8 characters ENDRESS+HAUSER.

9 promag . + 2246 11 display segments on engineering units, instrument l/s l m3/h m3. status and process condition USgpm USgal Low flow cutoff USgal x 1000. Overflow Error Empty Pipe E - +. 3 operating keys: Access / leave operating matrix Select functions Set / store parameters ti043y03. Functions (Operating matrix). User interface Auxiliary input Function code (display) Function Flow rate units Totalizer units Display Totalizer reset Current output Display mode Full scale value (freely adjustable) Display damping Time constant (freely selectable) Totalizer overflows Current range 0 mA.

10 Process parameter Pulse output Creep suppression Pulse value (freely adjustable) Empty Pipe Detection (EPD). Electrode cleaning (ECC), optional Status output Function 4. Diameter Selection As a rule, the pipe diameter determines the sensor nominal diameter. The flow velocity (v) is also to be deter- mined by the fluid's physical properties: v < 2 m/s: with abrasive fluids, A necessary increase in velocity can be potter's clay, lime milk, ore slurry achieved through a reduction of the v > 2 m/s: with fluids causing build up, sensor diameter (see page 8).